- #1
Carlos de Meo
- 23
- 2
Hi everyone
Can anyone help me understanding the physical meaning for the complex dielectric constant?
Assuming a electromagnetic wave from air to a conductor, the following equation is valid
R= ((n-1)2+k2)/((n+1)2+k2) where K is the extinction coefficient (the complex part of the complex refraction index)
So, High K means high R
K= ((ε12+ε22)1/2-ε1)1/2
As far as i know, metals tend to exhibit high reflectivity due to high values of K, correct?
And insulators in general, low values of K, also correct?
So, according to some literature, the high values of K comes from high values of ε2. Also correct?
And, to finish, where does the ε2 comes from, is it due to high free electrons density?
Thank you very much for your time
Can anyone help me understanding the physical meaning for the complex dielectric constant?
Assuming a electromagnetic wave from air to a conductor, the following equation is valid
R= ((n-1)2+k2)/((n+1)2+k2) where K is the extinction coefficient (the complex part of the complex refraction index)
So, High K means high R
K= ((ε12+ε22)1/2-ε1)1/2
As far as i know, metals tend to exhibit high reflectivity due to high values of K, correct?
And insulators in general, low values of K, also correct?
So, according to some literature, the high values of K comes from high values of ε2. Also correct?
And, to finish, where does the ε2 comes from, is it due to high free electrons density?
Thank you very much for your time